object ForGuardDemo extends App {
  val englishSorce: Array[Int] = Array(75, 58, 90, 65, 52, 88, 72, 45, 68, 70, 59, 82)
  var passCount = 0
  val totalStudents = englishSorce.length
  val passScores = collection.mutable.ListBuffer[Int]()
  for (score <- englishSorce if score >= 60){
    passCount += 1
    passScores += score
    println(s"及格成绩：$score")
  }
  val passRate = (passCount.toDouble / totalStudents)*100
  println(s"\n及格成绩列表：$passScores")
  println(s"及格人数：$passCount/$totalStudents")
  println(f"及格率：$passRate%.1f%%")
}
